johnson



July 29. 1924. 1,502,955

e. c. JOHNSON OIL WELL PUMP Filed Jan. 11. 1923 d o [4 8' \Hs il l FIGI FIGZ Wrmzsscs snug H01 one end of its movement and adapted to be moved out of the aforementioned end of its movement by said irregularity registering therewith when said movable guide plate is moved toward the other guide plate;

20. A photographic printing machine including step by step feeding means, a control member fed thereby and having irregularities disposed thereon in predeterminately selected arrangement thereon, a support, a plurality of elements mounted on said support for individual movement laterally of the feeding movement of the control member and yieldably pressed to the end of their movement adjacent the control member, said elements being adapted to register with respective irregularities of the control member during respective rest periods in its feeding movement and adapted to be caused individually to assume abnormal relation with the control member by respective registering irregularities when said support-and control member are relatively moved toward each other during respective rest periods in the feeding movement of the control member, and means operating in timed relation with said feeding means adapted-to relatively move said support and control member towards each other and to release during each rest period in the feeding movement of the control member. I

21. A photographic printing machine including stepby step feeding means, adapted to feed a control member having laterally projecting irregularitiesdisposed in predeterminately selected arrangement thereon, a support, a plurality of levers pivotally mounted on saidsupport for individual movement laterally of the feeding movement of the control member and yieldably pressed'to the end of their movement adjacentthecontrol member, said levers being adapted to register with respective irregularities of the control-member during re spective rest periods in its feeding movement and adapted to be individually moved out of said aforementioned end of their movement by respective registering irregularities when said support and control member are relatively moved toward each of the control member.

22; A photographic printing machine cluding a film guide comprising opposin face guide plates disposed opposite respective faces of a film guided thereby, one of said guide plates being movable to and away from the other guide plate, step by step feeding means adapted to feed a film through said guide, said film having irregularities projecting laterally from a face thereof and disposed in predeterminately selected arrangement thereon, means operating in timed relation with said feeding means and adapted to move said movable guide plate toward and away fromthe other guide plate during each rest period in the feeding movement of the film, and a plurality of elements mounted for indi vidual movement and yieldably pressed to one end of their movement, .said elements being adapted to register with respective irregularities during respective rest periods in the feeding of the film and adapted to be moved individually out of the aforementi0ned end of their strokes by respective registering irregularities when said movable guide plate is moved toward the other guide plate.

23. A photographic printing machine including a reciprocable guide comprising opposin face guide plates, one of which is movable to and away from the other plate, a perforation engaging advancing member reciprocable in a plane normal to the plane of reciprocation of the guide, means for reciprocating said guide and said advancing member-in timed relation to effect step by step advance of perforated strip in said guide, said strip having an irregularity projecting from a face thereof and disposed in a predeterminately selected position thereommeans operating in timed relation with said means adapted to move said movable guide plate toward the other guide plate before and to move the same away from said other guide plate after one stroke of the reciprocation of the guide during each rest period in the feeding movement of the strip,

a device mounted to reciprocate with the v guide and movably mounted with respect thereto and yield'ably pressed into one end of its movement,- said device being adapted to be moved out of a normal position by said irregularity registering therewith when said movable guide plate is moved toward the other guide plate, and a circuit breaker device normally in one position and adapted to be moved to the opposite position thereof to I], 0 P fll \Vhile it isbelieved from the foregoing description the nature and advantages of the invention will be readily apparent, I desire to have it understood that I do not limit myself to what is herein shown and described, and that such changes may be resorted to when desired, as fall within the scope of what is herein claimed.

What I claim is: A pair of tubular members connected with a nipple having male and female threads, a reducing: nipple in the lower end of the lower tubular member, a perforated tubular member extending downward from said reducing nipple, a tubular member extending upward from said reducing nipple, a tapered seat at the top of the last mentioned tubular member, a tubular member threaded into the first mentioned nipple and extending down ward, a perforated tubular member threaded into the first mentioned nipple and extending upward, a close fitting tubular member slidably disposed in the last mentioned perforated tubular member. one of said valves attached to the top of said close fitting tubular member, and one of said valves disposed in the said tapered seat, a tapered plug removably disposed in the top of the last mentioned tubular member.

GROVER C. JOHNSON.

Witnesses C. B. ToNEY, J12, FRED. L. Bronson. 

